- Time:Jun 28, 2023
Magnesia-chrome brick is a common refractory material, mainly used in high-temperature industrial equipment, especially in the fields of iron and steel smelting and glass kiln. The main raw material components of magnesia chrome bricks include:
1. Magnesium oxide (MgO): Magnesia is the main component of magnesia-chrome bricks, usually occupying a large proportion. It has good fire resistance and corrosion resistance, and can withstand chemical attack and thermal cycling in high temperature environments.
2. Chromium oxide (Cr2O3): Chromium oxide is another important raw material component, often together with magnesium oxide to form the matrix of magnesia-chrome bricks. The addition of chromium oxide can improve the refractory performance, erosion resistance and thermal shock resistance of the brick body.
In addition to the above main components, the preparation process of magnesia-chrome bricks also involves other auxiliary raw materials and additives to adjust the characteristics and performance of the brick body, such as:
1. Silicate materials: Silicate materials such as clay and talc can be used as binders for magnesia-chrome bricks. By controlling the content and ratio of silicate materials, the structure and performance of bricks can be affected.
2. Magnesium carbide (MgC): Magnesium carbide can be used as an additive. Adding an appropriate amount of magnesium carbide can increase the wear resistance and impact resistance of magnesia-chrome bricks.
3. Aluminum powder: The addition of aluminum powder can improve the corrosion resistance and high temperature resistance of magnesia-chrome bricks.
The ratio and preparation process of magnesia-chrome bricks can be adjusted according to specific application requirements and conditions of use. Magnesia-chrome bricks with good refractory performance, corrosion resistance and mechanical strength can be prepared by rationally selecting raw material components and optimizing the process.
